Malicious code in @rutxploit-sec/subsplash-google-tag-manager (npm)

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (8fe2c746dc5c09bc67257fd4eba671824806c9080b7ca94949e45175deb03b8d) package.json declares a preinstall script that executes inline Node code reading os.hostname() and os.userInfo().username and issuing an HTTP GET to http://127.0.0.1:8099/ carrying those identifiers along with the impersonated package name. The package is published under @rutxploit-sec but its manifest description and index.js console output identify it as representing the private scope @subsplash/google-tag-manager, and any installer whose resolver picks this public name over the intended private package will execute the preinstall code and disclose hostname and username. The beacon destination in this artifact is loopback (127.0.0.1:8099), consistent with a proof-of-concept collector rather than a live external C2, but the install-time execution primitive and dependency-confusion targeting are the full attack shape.

Source published

29 Sep 2026 22:11:49 UTC

Source modified

29 Sep 2026 22:31:17 UTC

Observed here

24 Oct 2026 13:17:17 UTC

Source terms

OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.